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Revenue from Contracts with Customers - Revenue Disaggregated By Product Type And Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 590.5	$ 665.7	$ 1,843.6	$ 2,010.8
North America Contract:
Disaggregation of Revenue [Line Items]
Net sales	268.2	413.4	930.2	1,322.5
North America Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	160.0	249.6	564.6	810.4
North America Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	64.5	96.2	216.7	316.7
North America Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	18.6	28.0	61.2	75.8
North America Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	25.1	39.6	87.7	119.6
International Contract:
Disaggregation of Revenue [Line Items]
Net sales	165.7	156.1	487.4	388.1
International Contract: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	29.8	45.4	106.8	138.2
International Contract: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	75.2	59.4	211.5	178.2
International Contract: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	56.6	49.1	160.1	62.5
International Contract: | Other
Disaggregation of Revenue [Line Items]
Net sales	4.1	2.2	9.0	9.2
Retail:
Disaggregation of Revenue [Line Items]
Net sales	156.6	96.2	426.0	300.2
Retail: | Workplace
Disaggregation of Revenue [Line Items]
Net sales	2.2	1.0	6.2	3.1
Retail: | Performance Seating
Disaggregation of Revenue [Line Items]
Net sales	58.7	11.7	155.3	33.4
Retail: | Lifestyle
Disaggregation of Revenue [Line Items]
Net sales	95.4	83.5	263.7	263.7
Retail: | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 0.3	$ 0.0	$ 0.8	$ 0.0

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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